ASTROSAT CZTI

Data Quality Report

Orbit 38705

Creation date: 2024-06-27T21:55:20.499481
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_054T01_9000005392_38705cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38705cztM0_level2_quad_clean.evt
Size (bytes)500,938,56088,729,920
Size477.7 MB 84.6 MB
Events in quadrant A2,810,512633,207
Events in quadrant B3,910,928586,575
Events in quadrant C2,590,672615,731
Events in quadrant D8,811,304472,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118023
B0152382
C0110952
D0299622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5408120.221893%
B54085279.744822%
C540820.036982%
D5408132424.482249%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7170 5409 6 6 0.08% 0.11%
B 7169 5408 430 430 6.00% 7.95%
C 7170 5409 1 1 0.01% 0.02%
D 7170 5409 1191 1191 16.61% 22.02%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 397499 3159.33 612 601 125.6
A 7 3 30824 240.58 612 601 125.6
A 13 254 8459 62.55 612 601 125.6
B 5 184 1204839 10729.79 574 558 112.2
B 4 251 227774 2024.43 574 558 112.2
B 4 171 178288 1583.52 574 558 112.2
C 15 214 221802 1581.55 598 601 139.9
C 0 10 16594 114.35 598 601 139.9
C 15 208 6586 42.79 598 601 139.9
D 2 16 5729706 41624.49 556 540 137.6
D 12 235 259614 1882.27 556 540 137.6
D 14 52 165640 1199.51 556 540 137.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter